Roy Jones Jr.

robbed of gold medal at 1988 Olympics on a scoring error; still voted Outstanding Boxer of the Games; won IBF middleweight crown, beating Bernard Hopkins in 1993; moved up to super middleweight and won IBF title from James Toney in 1994; moved up to light heavyweight, winning WBC (1997), WBA (1998) and IBF titles (1999); made temporary move to heavyweight in 2003 and decisioned John Ruiz for WBA belt; lost WBC light heavyweight belt to Antonio Tarver in a 2nd round KO in 2004; knocked out in 9th round of comeback fight with Glen Johnson in Sept. 2004.